MD Settings: fix overflow scrolling for <settings-dialog>

chrome/browser/resources/settings/settings_dialog.html

Index: chrome/browser/resources/settings/settings_dialog.html
diff --git a/chrome/browser/resources/settings/settings_dialog.html b/chrome/browser/resources/settings/settings_dialog.html
index d923118da9f71454e0513536e4343cbb4784bbdd..e6b927e61c05db69a282488e7c78aaacf460bf26 100644
--- a/chrome/browser/resources/settings/settings_dialog.html
+++ b/chrome/browser/resources/settings/settings_dialog.html
@@ -8,10 +8,11 @@
   <template>
     <style include="paper-dialog-shared-styles"></style>
     <style>
-      .body-content {
+      .body-container {
         display: flex;
         flex-direction: column;
         min-height: 120px;
+        overflow-y: auto;
       }
 
       .dialog-content {
@@ -26,7 +27,7 @@
         padding: 0;
       }
 
-      .top-row {
+      .title-container {
         align-items: center;
         border-bottom: 1px solid rgba(0, 0, 0, 0.14);
         display: flex;
@@ -44,7 +45,6 @@
         border-radius: 2px;
         max-width: 800px;
         min-width: 512px;
-        overflow: auto;
       }
 
       :host ::content .body,
@@ -57,7 +57,7 @@
         margin: 12px 0 24px 0;
       }
 
-      :host ::content .button-container {
+      :host ::content .buttons {
         -webkit-padding-end: 16px;
         -webkit-padding-start: 16px;
         display: flex;
@@ -65,7 +65,7 @@
         margin-bottom: 12px;
       }
 
-      :host ::content .button-container .cancel-button {
+      :host ::content .buttons .cancel-button {
         -webkit-margin-end: 8px;
         color: var(--paper-grey-600);
       }
@@ -98,14 +98,16 @@
       }
     </style>
     <div class="dialog-content">
-      <div class="top-row">
+      <div class="title-container">
         <content select=".title"></content>
         <paper-icon-button icon="cr:clear" on-tap="cancel" id="close">
         </paper-icon-button>
       </div>
-      <div class="body-content">
+      <div class="body-container">
         <content select=".body"></content>
-        <content select=".button-container"></content>
+      </div>
+      <div class="button-container">
+        <content select=".buttons"></content>
       </div>
     </div>
     <div class="footer-container">